हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान कक्षा ११

Which of the Following Parameters Are the Same for All Hydrogen-like Atoms and Ions in Their Ground States? - Physics

Advertisements
Advertisements

प्रश्न

Which of the following parameters are the same for all hydrogen-like atoms and ions in their ground states?

विकल्प

  • Radius of the orbit

  • Speed of the electron

  •  Energy of the atom

  • Orbital angular momentum of the electron

MCQ
Advertisements

उत्तर

Orbital angular momentum of the electron

According to Bohr's atomic theory, the orbital angular momentum of an electron in a one-electron system is given by
`L_n = (nh)/(2pi)`
Here ,
n = Principal quantum number

The angular momentum is independent of the atomic number of the one-electron system. Therefore, it is same for all hydrogen-like atoms and ions in their ground states.
The other parameters given here are dependent on the atomic number of the hydrogen-like atom or ion taken.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 21: Bohr’s Model and Physics of Atom - MCQ [पृष्ठ ३८३]

APPEARS IN

एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
अध्याय 21 Bohr’s Model and Physics of Atom
MCQ | Q 12 | पृष्ठ ३८३

संबंधित प्रश्न

Calculate the radius of Bohr’s fifth orbit for hydrogen atom


What is the energy in joules, required to shift the electron of the hydrogen atom from the first Bohr orbit to the fifth Bohr orbit and what is the wavelength of the light emitted when the electron returns to the ground state? The ground state electron energy is –2.18 × 10–11 ergs.


Using Bohr’s postulates, obtain the expression for total energy of the electron in the nth orbit of hydrogen atom.


The electron in hydrogen atom is initially in the third excited state. What is the maximum number of spectral lines which can be emitted when it finally moves to the ground state?


Suppose, the electron in a hydrogen atom makes transition from n = 3 to n = 2 in 10−8 s. The order of the torque acting on the electron in this period, using the relation between torque and angular momentum as discussed in the chapter on rotational mechanics is


A beam of  light having wavelengths distributed uniformly between 450 nm to 550 nm passes through a sample of hydrogen gas. Which wavelength will have the least intensity in the transmitted beam?


Radiation from hydrogen discharge tube falls on a cesium plate. Find the maximum possible kinetic energy of the photoelectrons. Work function of cesium is 1.9 eV.


A filter transmits only the radiation of wavelength greater than 440 nm. Radiation from a hydrogen-discharge tube goes through such a filter and is incident on a metal of work function 2.0 eV. Find the stopping potential which can stop the photoelectrons.


Suppose in an imaginary world the angular momentum is quantized to be even integral multiples of h/2π. What is the longest possible wavelength emitted by hydrogen atoms in visible range in such a world according to Bohr's model?


Answer the following question.
Calculate the orbital period of the electron in the first excited state of the hydrogen atom.


Ratio of longest to shortest wavelength in Balmer series is ______.


Hydrogen atom has only one electron, so mutual repulsion between electrons is absent. However, in multielectron atoms mutual repulsion between the electrons is significant. How does this affect the energy of an electron in the orbitals of the same principal quantum number in multielectron atoms?


If a proton had a radius R and the charge was uniformly distributed, calculate using Bohr theory, the ground state energy of a H-atom when (i) R = 0.1 Å, and (ii) R = 10 Å.


Use Bohr's postulate to prove that the radius of nth orbit in a hydrogen atom is proportional to n2.


The number of times larger the spacing between the energy levels with n = 3 and n = 8 spacing between the energy level with n = 8 and n = 9 for the hydrogen atom is ______.


The energy required to remove the electron from a singly ionized Helium atom is 2.2 times the energy required to remove an electron from Helium atom. The total energy required to ionize the Helium atom completely is ______. 


The line at 434 nm in the Balmer series of the hydrogen spectrum corresponds to a transition of an electron from the nth to second Bohr orbit. The value of n is ______.


What is the energy of an electron in stationary state corresponding to n = 2?


Write the ionisation energy value for the hydrogen atom.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×